A Chymical Catechism, Or, The Application of Chymistry to the Arts: For the Use of Young People, Artists, Tradesmen and the Amusement of Leisure Hours : to which are Added a Vocabulary of Chymical Terms, Some Useful Tables, and a Variety of Amusing Experiments

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James Humphreys, 1807 - Всего страниц: 334
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Стр. 243 - The aorta of a whale is larger in the bore than the main pipe of the waterworks at London Bridge ; and the water roaring in its passage through that pipe is inferior, in impetus and velocity, to the blood gushing from the whale's heart.
Стр. 236 - That very law* which moulds a tear, And bids it trickle from its source, That law preserves the earth a sphere, And guides the planets in their course.
Стр. 41 - These arts of love diffuses ? What, but God ? Inspiring God ! who, boundless Spirit all, And unremitting Energy, pervades, Adjusts, sustains, and agitates the whole. He ceaseless works alone ; and yet alone Seems not to work : with such perfection framed Is this complex stupendous scheme of things.
Стр. 95 - Committee of the House of Commons, appointed to inquire into the Bankrupt Laws ; and i This and the two preceding motions were lost by large majorities.
Стр. iv - Besides, a knowledge of the first principles of chemistry will teach him when to use lime hot from the kiln, and when slacked; how to promote the putrefactive process in his composts, and at what period to check it, so as to prevent the fertilizing particles becoming effete, and of little value.
Стр. iii - Black, and had attended the lectures of that distinguished philosopher in the university of Glasgow. And he often acknowledged " that his first ideas on this subject were acquired by his attendance on Dr. Black's chymical lectures, and from the consideration of his theory of latent heat, and the expansibility of steam.
Стр. 26 - Sits on th' horizon round a settled gloom: Not such as wintry storms on mortals shed, Oppressing life; but lovely, gentle, kind, And full of every hope and every joy, The wish of Nature. Gradual sinks...
Стр. 165 - ... of the river ; the hen, with attentive eye, picks up every grain that is scattered and lost in the field ; the pigeon of rapid wing collects a similar tribute from the refuse of the grove, and the frugal bee turns to account even the small dust on the flower. There is no corner of the earth where the whole vegetable crop may not be reaped. Those plants which are rejected by one are a delicacy to another, and even among the finny tribes contribute to their fatness. The hog devours the horse-tail...
Стр. vii - ... of chymical skill; and such knowledge is absolutely necessary to enable either the dyer or the calico printer to produce in all cases permanent colours of the shade he intends. To...
Стр. 286 - To a similar solution of gold add about a fourth part of ether ; shake them together, and wait till the fluids separate ; the upper stratum, or ethereal gold, is then to be carefully poured off into another vessel. If any polished steel instrument or utensil be dipped into this solution, and instantly plunged into water, the surface will have acquired a coat of pure gold, being a very elegant and economical mode of preserving polished steel from rust.

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